Agenda - 03-02-2006-7b - Laserfiche WebLink

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Chapel Hill, but achieving tlzis while still maintaining the level of service desired by OWASA's customers will require additional and cwztimted collaboration among OWASA, local govet°mrtents, and the denelopmettt cotmnwtit~/. Amore complete answer is provided below. Long-Term Adequacy of OWASA's Water Supply An overview of historic and projected water demands, current azzd future supply capacities, and potential deficits is provided in Figure 1 and explained below. '~ Existing System ~ Quarry Pump Improvements ~ Expanded Quarry ]O.Yr Salo Yiaitl Without Rouse ,.,_._.,..._,~.~.-._._.._r.___._..-_._ _.- __._.- . _- - LouROwa .{' Wilh Reuse ~~~~' ____ Mare Reuw ... ~.~ _. _._._ _.._.__.___. __._. __.._. - 20Dt Master Pian _ _ _ _ _ , "Expectetl Growth" ~ " w ~ •YJN 300] arou0hl ~ i ~~ ~ ~ i-' Jordan lake (or orhersupply ---- ~~~s! ,~ ----* -~-- ----- ------ alternative) needed when average day ~~~ demand =target yield ` Eventual quarry storage volume: 2 4 - 3.0 bllllon gallons. Reuse Demantls per McKim 8 Creed Technical Memorandum #3 (gl8/OS). ^ Solid Diamonds: actual raw (untreated) water pumped from University Lalce and the Cane Creek Reservoir from 1980 tluough 2005. The substantial decrease during the past tlnee years reflects reduced customer demands since 2002 and the recycling of water treatment process water, first implemented in 2002. (Water that was formerly discarded as part of the normal treatment process is now recycled back through the water treatment plant.) ^ Dashed Black Line: raw water demands as originally projected in OWASA's 2001 Comprehensive Water and Sewer Master Plan. ^ Solid Red Line: our current estimate of future demands if the OWASA/tJNC wastewater reuse project for the main campus is not implemented. (The reuse project will enable UNC to use highly treated OWASA wastewater instead of pWASA-Water and Sewer CapacityGnptications o~hlcreased Development Density Page 4 of 2!